https://github.com/bittricky/retirement-calculator
A web application to calculate what you may need for retirement 🦳
https://github.com/bittricky/retirement-calculator
agentic-coding algorithms exercise javascript jest learning-exercise react shadcn simulations tailwindcss typescript vite yarn
Last synced: 2 months ago
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A web application to calculate what you may need for retirement 🦳
- Host: GitHub
- URL: https://github.com/bittricky/retirement-calculator
- Owner: bittricky
- Created: 2024-12-30T18:25:36.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-12-31T18:06:17.000Z (over 1 year ago)
- Last Synced: 2026-03-28T00:37:03.199Z (3 months ago)
- Topics: agentic-coding, algorithms, exercise, javascript, jest, learning-exercise, react, shadcn, simulations, tailwindcss, typescript, vite, yarn
- Language: TypeScript
- Homepage:
- Size: 216 KB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Retirement Calculator
A sophisticated retirement planning tool that runs a simulation to provide realistic retirement projections.
## Features
- Real-time retirement calculations
- Monte Carlo simulations for realistic projections
- Interactive input controls
- Visual progress tracking
- Success rate analysis
- Dark mode support
## How It Works
### Monte Carlo Simulation
The calculator uses [Monte Carlo simulation](https://en.wikipedia.org/wiki/Monte_Carlo_method) to model the uncertainty in retirement planning. Instead of using a single fixed rate of return, it:
1. Runs 1,000 different scenarios
2. Each scenario uses random returns from your specified range
3. Tracks how many scenarios result in successful retirement
4. Calculates a success rate based on these simulations
This approach provides a more realistic view of retirement outcomes by accounting for market volatility and various economic factors.
### Calculation Methodology
The calculator performs two main phases of calculations:
#### Accumulation Phase (Pre-Retirement)
- Applies investment returns to current savings
- Adds monthly contributions
- Adjusts for inflation
- Accounts for taxes on investment gains
#### Retirement Phase
- Calculates retirement expenses with inflation adjustment
- Includes Social Security benefits when eligible
- Applies investment returns to remaining savings
- Accounts for taxes on withdrawals
### Success Rate
The success rate indicates the percentage of scenarios where your savings last through retirement:
- ≥80%: Strong retirement plan (Green)
- 60-79%: Moderate risk (Yellow)
- <60%: High risk (Red)
## Local Development Setup
1. Clone the repository:
```bash
git clone [repository-url]
cd retirement-calculator
```
2. Install dependencies:
```bash
npm install
```
3. Start the development server:
```bash
npm run dev
```
4. Open http://localhost:5173 in your browser
---
This project was an exercise to learn about the Monte Carlo Simulation method. What it does, How it works, and how to use it. Speak to a professional financial planner if you are serious about retirement planning. The calculator is not intended to be a substitute for professional financial advice.